Toothbrush



FIG. 1 is a top plan view of an embodiment of a toothbrush showing mynew design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a right side elevation view thereof;

FIG. 4 is a left side elevation view thereof;

FIG. 5 is a front elevation view thereof; and,

FIG. 6 is a rear plan view thereof.

Broken lines are included for the purpose of illustrating unclaimedportions and form no part of the claimed design.

CLAIM The ornamental design for a toothbrush, as shown and described. 